We report here the results on studying of protonpion and two-pion corr
elations in eA interactions at 5 GeV. Kinematic correlations were stud
ied as a function of the two particle opening angle, their momenta and
proton multiplicity. The universal properties of correlation function
s were found with respect to different particle species. Interferometr
y method was used to determine the size of the interaction region.